>> pelley: tonight, would america go to war in syria? the u.s. is spying on the ctator's chemical weapons. there's new intelligence on that and word that syria may be losing its best ally. david martin at the pentagon, margaret brennan with hillary clinton, and elizabeth palm wer a rare look inside the war. >> reporter: in the hospital's intensive care unit, the men can't speak but their injuries do. >> pelley: today, the first state in the nation has legalized marijuana for recreational use, leaving cops and citizens with lots of questions. john blackstone clears the air. and what town has the winningest football team in the nation? wyatt andrews takes us to a community on hard times now riding high. >> one, two, three. captioning sponsored by cbs this is the "cbs evening news" with scott pelley. >> pelley: good evening. whether the u.s. enters the war in syria appears to be up to the dictator bashar al-assad. on monday, david martin reported that the assad regime had given orders to prepare chemical weapons for possible use to put down the revo